Edgerton Lab Notebook T-1, Page 45a:
September 16, 1930
- Page start date:
- September 16, 1930
- Content type:
- foldout/overlay,photograph
- Transcription:
- found that it gave much better operation and returned to Boston on the 8th of sept.
On the 12 Spencer again called and wished me to bring up the oscillograph and an assistant to watch the stroboscope. Mr. Sullivan went with me.
I took a 1000 volt plate transformer which had a midtap. Thus I could use both tubes in opposition. 15000 ohms was put in the grid circuits where I used 5000 before. This was increased because the 5000 ohm resisters could not ? the current.
[Circuit for ?] This circuit worked very satisfactory. Was seen by Oliver, Dillard, Spencer, Thurston, Fisk Sullivan, Patterson, Coe, ?, ?, Lee and others.
[Photograph showing arrows on the poles and framework supporting thyratrons]
If the grid impedance is put in the neutral leg the operation of the grid transformer will be somewhat different. It might be some advantage to use two grid transformers and a neutral resistance to get favourable action.
Moving picgtures of system disturbances were taken. I returned to Boston with Sullivan on Sept 16, 1930. today. Had a great time.
- Keywords:
- photo
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